Evaluation of agroecological condition of the soils involved in the development of sand and gravel quarries of Kansk district of Krasnoyarsk region

The purpose of the research was to assess agro-ecological state of the soils in degraded area in Kansk district of Krasnoyarsk Region to restore its fertility and return to agricultural use. The re- search problems were to analyze the content of humus, macronutrients and the reaction of native and disturbed by the development of soil environ- ment; to assess agroecological state of compared sample areas based on SEI; to propose the method of restoration of disturbed land array. The object of the study was a disturbed land area of 20 hectares, located within the Kansk-Taseyevo depression and dedicated to ancient valley of the river Kan (560 20/N and 95062/E.). According to the survey, the soil cover is represented by ordinary calcareous shortened medium-humus medium-loamy on brown-brown loess-like middle loam chernozyom. In the soil of test areas the content of humus, mo- bile phosphorus, exchangeable potassium, nitrate nitrogen and the soil reaction were determined. Soil environmental index was calculated according to I...